Use accurate rounding in FitCenter when checking to see if we can skip

floor is necessary to make sure that we populate all pixels in the
Bitmap, but it's not necessary to use to check if our input Bitmap has
already been transformed and can be returned as is. Using floor can
cause us to re-draw a Bitmap unnecessarily.

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Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=167789795

Author: sjudd

library/src/main/java/com/bumptech/glide/load/resource/bitmap/TransformationUtils.java

@@ -127,11 +127,10 @@ public static Bitmap fitCenter(@NonNull BitmapPool pool, @NonNull Bitmap inBitma
     final float heightPercentage = height / (float) inBitmap.getHeight();
     final float minPercentage = Math.min(widthPercentage, heightPercentage);
 
-    // take the floor of the target width/height, not round. If the matrix
-    // passed into drawBitmap rounds differently, we want to slightly
-    // overdraw, not underdraw, to avoid artifacts from bitmap reuse.
-    final int targetWidth = (int) (minPercentage * inBitmap.getWidth());
-    final int targetHeight = (int) (minPercentage * inBitmap.getHeight());
+    // Round here in case we've decoded exactly the image we want, but take the floor below to
+    // avoid a line of garbage or blank pixels in images.
+    int targetWidth = Math.round(minPercentage * inBitmap.getWidth());
+    int targetHeight = Math.round(minPercentage * inBitmap.getHeight());
 
     if (inBitmap.getWidth() == targetWidth && inBitmap.getHeight() == targetHeight) {
       if (Log.isLoggable(TAG, Log.VERBOSE)) {
@@ -140,6 +139,12 @@ public static Bitmap fitCenter(@NonNull BitmapPool pool, @NonNull Bitmap inBitma
       return inBitmap;
     }
 
+    // Take the floor of the target width/height, not round. If the matrix
+    // passed into drawBitmap rounds differently, we want to slightly
+    // overdraw, not underdraw, to avoid artifacts from bitmap reuse.
+    targetWidth = (int) (minPercentage * inBitmap.getWidth());
+    targetHeight = (int) (minPercentage * inBitmap.getHeight());
+
     Bitmap.Config config = getSafeConfig(inBitmap);
     Bitmap toReuse = pool.get(targetWidth, targetHeight, config);